Horsepower?

[64c10step]

Have a BBC 468 with approximately 8.5:1-9:1 cr, edelbrock 11-413-8 cam .510lift intake and exhaust ,dur .006,intake tappet 264 exhaust tappet270, edelbrock rpm air gap intake, edelbrock 750cfm carb, msd e curve distributor, 049 high performance heads, speedway short tube headers with dual h piped exhaust. Block casting # 3999289. Has between 155-160 pressure in each cylinder cold. Wanted to see if anyone could estimate the horsepower, no access to a dyno, any estimates would be greatly appreciated! Thank you